Assxgfflob



W. SCHWAREWNN.

BRUSH HOLDER fon MAGNETOS.

APPLICAHON FILED OCT. ZG, WIE.

Patented Nov. ld, 1919.

| l r l l l UNITED STATES PATENT i WOLFGANG EIEtIIIElS'J'.'Y SCHWARZMANN, 0F SPRINGFELD, Mi-SSACHUSETTE, BY MESNE ASSIGNMENTS, T0 AMERICAN BOSCH MAGNET@ CRPORA'EIGH, @n

YORK, N. Y., A CORPORATION F NEW YORK.

BRUSH-HOLDER FOR MAGNETOS..

To all 'whom 1f/may concern.'

Be it known that LWOLFGANG E. SCHWARZ- MANN, a citizen of the United States, residing at Long Meadow, Springfield, in the 6 county of Hampden, State of Massachusetts,

have invented certain new and useful Improvements in Brush-Holders for Magnetos; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as ill enable others skilled in the art to whichit appertains to make and use the same.

The present invention relates to brush holders for magnetos, and particularly to magnetos of the-inclosed type having a collector ring at one end and a distributer at the other end electrically connected thereto through the archof the magnet of the magneto.

26 Heretofore it was customary to have an end late entirely coverin the collector end of t e magneto and inc osing the brush holder, so that not only was the weight inl creased but to inspect, repair or replace the brushes, the end plate had to be iirst removed. Furthermore, where an outside Iconductor was used, as for a wireless transmitting set; a bushing through the end plate had to be rovided in order to maintain the 80 ma etc list-tight.

, accordance withmy invention, the brush holder is astened to the end plate on the outside thereof'on the collector end of .the magneto in position to close an opening into the collector housing and an opening through the end plate into the arch of the mafrne'to. In the preferred construction descriloed hereinafter, the brush holder has a lower vertical branch extending into the col, lector housing and carryingsa brush in en. gagement with the collector ring therein, and

an intermediate horizontal branch carrying a brush in engagement with the rotatable end of the distributer rod in the arch of the magnet of the magneto, an up er vertical portion being provided to close t e end Plate opening which is of suiicient hei ht for raising the lower vertical branch c ear of the collector housing. Furthermore, the

lower vertical branch and the intermediate horizontal branch have,A brush guides which are joined at their inner ends to complete the electrical connection between the brushes therein, whilev the brush holder has a bore,

Specification of Letters Patent,

@patented Non', d.,

Application led October 26, 1918. Serial No. 259,751.

extending tothe junction of the guides connection thereto of an outside conducter.

Thus besides simplifying the construction' the distributer rod, as well as the brushesand the fastening of the outside conductor, for purposes of inspection, repair or repiace ment thereof. a

In the accompanying drawings illust/ratl ing this preferred form of construction in application, as an example, to a magneto of the sleeve type, `Figure 1 is a transverse secu tion` of the magneto; Fig. 2 is a View of the end plate alone from the inside; Fig. 3 is a View of the collector end of the magneto with the magneto gear removed; Fig. Li is a side View of the brush holder alone; and Fig. 5 is a section on line 5-5 of Fig.

The magneto has the magnets 1 of arch form, the sleeve 2 rotatable in bearings f and carrying the magneto gear #i and distributer pinion 5, and the armature 6 hel( in the bearing 7 b v the iocking disk t3 an having a generating "winding comprising the primary turns 9 and the secondary turns l0. The mechanicalinteiiupter be otl 'any suitable kind ,mounted in the housing 11. The distributer consists of the distributer gear 12 carrying the brush i8 in engagement with the spark-plug distributing contacts 14 in the-distributer block 15. The gear 12 also carries the distributer rod having an embedded conductor 16 connected at oneA end to the sleeve 17 holding the brush Y,

13 and at the other end to the metal cap 1,8,

The distributer forms a closure for the arch of the magnets 1 at4 that end of the magneto.

' The insulated terminal of the secondary turns 10 is connected in any suitable way to the collector ring 19, which is embedded in the insulating member 2O arranged in. the4 collector husing 21. l The brush holder 2 2 has a lower verticai. portion 23 extending into the collector housing and closing the opening tliei'einto,l and it also has an intermediate herizontafipertion 24 extending through ari-opening- 25 ef the end plate 26. Said vertical portion has i guide `29 for the brush 30, the two guides be-A ing joined at their inner ends to complete the electrical Connection between theln ashes. The hrnsh E28 is pressed by the spring Bl inte sliding contact 'with the collector ring' 19, and the brush Bois pressed hy the spring 32 into contact with the metal cap distrihnter rod. The hrnsh holder Jurther has an upper vertical portion closing the remainder o the opening Q5.

The brush holder has a third hore 34 extending io 'the junction of the two brush guides. Thepointcd screw passes through the guide and pierces the insulation of the outside conductor so as to connect it to the brush @nidos an d at the saine time spread the conductor to` close the here Se and hold it 'tightly therein shown particularly in he plate 96 is bolted in the Well known Way to the inagneto5 and the brush holder is screwed' at 37 to the end plate. To remove the hrnsh holder tor inspection, rep ir or replacement oi? the collector ring,l 19 and the brushes moved., "l the end of and 3.0.I4 the four screws are ret ie brush. holder is raised until the lower vertical portion 23 oi'; trie collector housing 2l, hrnsh holder may then he drawn away from the magneto. Upon relac: 'the hrnsh holder, oy first project ing the horizontal branch through the opening 25 and 'then lowering the brush holder until the lower vertical branch closes the collector housing7 the brushes 28 andfl are properly engaged with the collector ring' l@ and the metal cap 18a respectively.

' o' thus described inf; invention, what vwhereupon the i guete, a magnet oi arched forni, housing having an opening therel 'olal'e at collector end et' the i opening therethronf'oi r, magnet7 a hrush hold l fastened to tira end plato on the outs] ther ci and ele ig said w, brushes earried hy the lirnrali heidiJ the collector housing an et 'the magnet.

a collector into, an magneto into the e 'the heli Y end plate en dosing said openi hr 1 ie brush h lder and te le :ollocior housing and tlf, magnet. and hrusl. i0*

18 of the nietal cap 18, as Well as the' ying through the a rch into the i'astened to the end plate on the outside of the magnet, a hrush holder thereof and closing said openings, brushes through into the arch of the magnet; a brush' holder fastened tothe end plate on the outside thereof and having a lower vertical portion`extending into the collector housing and closing the opening thereinto, 'an intermediate horizontal portion extending through the opening in the end plate 'n lo thr. arch of the magnet, and an upper vertical portion covering the remainder' of the opening through the end plate; the construction and arrangement heing such that, when the brush holder is nnfastened troni the ond platea the intermediate horizontal portion may he raised sniticienl'lv in the opening through the end plate to withdraw the lower vertical portion 'from the opening in` the collector housing.

l'n magneto; a magnet of arched 'lering collector housing having an opens ing thereinto; an end plate at the collector end of the magneto and having an opening theretln'oiigh .into the arch of the magnet; a brush holder fastened to the end plate on the outside thereof and having a loiver vertical 'portion extending into the collector h using and closing the opening thereinto, an intermediate horizontal portion extendopening in the end plate into the arch ol the magnet7 and an upper urtical portion Covering the remainder of the opening through the end plaie; and

s 1 guides joined at their inner ends and ding into the lower vertical portion and ntermodiate horizontal portion respecto complete the electrical connection n. the brushes therein; the construc- "angement lining such that. when I l older ,s uniustened from the end te the ii'iterniediaie horizontal portion of he raised suieiently 'he opening through the end plate to dra-iv the lower vertical portion from onening in the collector' housinf".

l iriagneto; a magnet of arched eter honsing having an opon end plate at the collector .ng vi f* on opening thero- L; ne arch ,he magnet; ahrush r rwtene te the end plate on the outplate at the collector sof side thereof land having a lower vertical portion extending into the collector housing and closing the -epening the-reinto, an intermediate `horizontal portion extending through the opening in the end plate into the arch of the magnet, and an upper vertical portion covering the remainder of the opening through the end plate;l brush guides joined at their inner ends and extending into the lower vertical portion and the intermediate horizontal portion respectively to complete the electrical connection between the 

